Bounds checking bounds-safe interfaces in unchecked scopes#1169
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August 23, 2021 15:14
LValuesAssignedChecked contains AbstractSets representing lvalues expressions that have unchecked pointer type that were assigned a checked pointer during the current top-level statement (if the statement is in an unchecked scope). AbstractSets in LValuesAssignedChecked should have their bounds validated after checking the current statement.
…so it results in a warning
…ith declared bounds
…unds-safe interface
…into bounds-checking-unchecked-scope
sulekhark
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Aug 25, 2021
sulekhark
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LGTM (there's just one minor comment)! Thank you!
| p += i; | ||
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| // The type of the RHS expression p + r is int *, so a checked pointer is not | ||
| // assigned to p here. |
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It looks like the code that the comment on lines 841 and 842 is referring to is missing (not sure).
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The comment on lines 841 and 842 is referring to the code on line 843, since the type of the RHS expression p - (_Array_ptr<int>)q is int *.
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The comment has a typo, so I'll update the comment - thanks for catching this!
added 2 commits
August 25, 2021 17:34
…into bounds-checking-unchecked-scope
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Fixes #1158
This PR updates the bounds checking behavior for lvalue expressions with bounds-safe interfaces in unchecked scopes.
If:
Sis in an unchecked scope, and:ehas unchecked pointer type (its bounds were declared using a bounds-safe interface), and:Sdoes not contain an assignmente = e1wheree1is a checked pointer, then:The bounds of
eare not validated after checkingS.